behaviour

emotion and expression

...of emotion also includes conscious and unconscious gestures, postures and mannerisms, and overt behaviour that can be either spontaneous or deliberate. One might hesitate to call deliberate behaviour an “expression” because of the intervening conscious activity it involves. One might speak instead of such behaviour as being “out of” the emotion (as in, “he...

instinct

Behaviour patterns regarded as instinctive range from simple reflexes to complex sequences of actions covering extended amounts of time. Occurrence can be spontaneous or selective in response to external stimuli. For example, the territorial defense behaviour of three-spined sticklebacks and of European robins can be triggered by simple patches of red, despite the fact that these animals have...